An optimization method for fine adjustment of ballastless track with dual-track combined constraints

Abstract

The invention discloses a method for optimizing the fine adjustment amount of a ballastless track under combination constraints of a double track. Introduce smoothness constraints into the formulation of fine-tuning schemes, integrate reference rails and non-reference rails to construct constraint equations, and comprehensively constrain the direction, height, level, gauge, and distortion of the left and right rails. In order to calculate the target, follow the principle of minimum overall adjustment amount to establish the optimization model of track fine adjustment amount constrained by dual-track combination, and simultaneously solve the optimal fine adjustment amount of dual-rail track according to the optimization theory, thus completing the automatic formulation of the ballastless track dual-rail fine adjustment optimization scheme. According to this scheme, the reference rail and the non-reference rail are adjusted at the same time, which can fully control the smoothness state of the double rails. This method can make up for the lack of smoothness of the traditional ballastless track fine-tuning method, especially in the automatic formulation of fine-tuning schemes and rectification of non-standard rail irregularities, and further improves the efficiency and rationality of ballastless track fine-tuning scheme formulation.

Description

technical field [0001] The invention relates to the technical field of railway engineering and optimization processing, in particular to a ballastless track fine-tuning optimization method with dual-track combination constraints. Background technique [0002] The fine-tuning operation of ballastless track is the key to ensure the high smoothness and high stability of the geometric state of ballastless track in high-speed railway. The processing software performs simulation adjustment, and formulates the fastener adjustment scheme of the reference rail. The on-site construction personnel follow the operation process of "rail first, then gauge, first high and low, then level", carry out operations on the reference rail according to the fastener adjustment plan, and adjust the non-reference rail according to parameters such as gauge, level, distortion, etc., thus realizing Correction of irregularity of ballastless track. [0003] The traditional fine-tuning operation method r...

AI Technical Summary

Problems solved by technology

[0003] The traditional fine-tuning operation method relies too much on the design experience of technicians in the scheme formulation process, and the simulation adjustment process often requires repeated attempts, which may easily cause the optimization result to fail to meet the smoothness requirements, and restrict the effect of the reference rail fine-tuning operation

In addition, the traditional operation process only relies on the gauge, level and other parameters to constrain the non-reference rail, and the operation accuracy is limited. The geometric shape and position of the non-reference rail after the actual adjustment operation is obviously worse than that of the reference rail, which is not conducive to the smoothness of the non-reference rail realization of

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